A planet that may support alien life has been discovered less than 20 light-years from Earth. The "promising" super-Earth - called HD 20794 d - may house water, according to the international ...
Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.
Scientists believe the exoplanet HD 20794 d, six times the mass of Earth, could harbour liquid water on its surface.
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